<script lang="ts" setup>
import { defineProps, ref } from 'vue'
import { onLoad } from '@dcloudio/uni-app'
import type { SubTypeItem } from '@/types/hot'
import { getHotRecommendApi } from '@/services/hot'
// 热门推荐页 标题和url
const urlMap = [
  { type: '1', title: '特惠推荐', url: '/hot/preference' },
  { type: '2', title: '爆款推荐', url: '/hot/inVogue' },
  { type: '3', title: '一站买全', url: '/hot/oneStop' },
  { type: '4', title: '新鲜好物', url: '/hot/new' },
]
// uniapp 获取页面参数
const query = defineProps<{
  type: string
}>()
// console.log(query)
// 获取当前推荐信息
const currUrlMap = urlMap.find((item) => item.type === query.type)
// 动态设置标题
uni.setNavigationBarTitle({
  title: currUrlMap?.title || '热门推荐',
})

// 推荐封面图
const bannerPicture = ref('')
// 推荐选项
const subTypes = ref<(SubTypeItem & { finish?: boolean })[]>()
// 高亮的下标
const activeIndex = ref(0)
// 获取热门推荐数据
const getHotRecommendData = async () => {
  const res = await getHotRecommendApi(currUrlMap?.url || '/hot/preference', {
    // 技巧：环境变量，开发环境，修改初始页面方便测试分页结束
    // page: import.meta.env.DEV ? 30 : 1,
    page: 1,
    pageSize: 10,
  })
  // 保存封面
  bannerPicture.value = res.result.bannerPicture
  // 保存列表
  subTypes.value = res.result.subTypes
}
// 页面加载
onLoad(() => {
  getHotRecommendData()
})
// 滚动触底
const onScrolltolower = async () => {
  // 获取当前选项
  const currSubTypes = subTypes.value![activeIndex.value]
  // 分页条件
  if (currSubTypes.goodsItems.page < currSubTypes.goodsItems.pages) {
    // 当前页码累加
    currSubTypes.goodsItems.page++
  } else {
    // 标记已结束
    currSubTypes.finish = true
    // 退出并轻提示
    return uni.showToast({ title: '没有更多数据了', icon: 'none' })
  }

  // 调用API传参
  const res = await getHotRecommendApi(currUrlMap?.url || '/hot/preference', {
    subType: currSubTypes.id,
    page: currSubTypes.goodsItems.page,
    pageSize: currSubTypes.goodsItems.pageSize,
  })
  // 新的列表选项
  const newsSubTypes = res.result.subTypes[activeIndex.value]
  // 数组追加
  currSubTypes.goodsItems.items.push(...newsSubTypes.goodsItems.items)
}
</script>
<template>
  <view class="viewport">
    <!-- 推荐封面图 -->
    <view class="cover">
      <image class="image" mode="widthFix" :src="bannerPicture"> </image>
    </view>
    <!-- 推荐选项 -->
    <view class="tabs">
      <text
        class="text"
        v-for="(item, index) in subTypes"
        @tap="activeIndex = index"
        :key="item.id"
        :class="{ active: activeIndex === index }"
        >{{ item.title }}</text
      >
    </view>
    <!-- 推荐列表 -->
    <scroll-view
      v-for="(item, index) in subTypes"
      enable-back-to-top
      @scrolltolower="onScrolltolower"
      :key="item.id"
      v-show="activeIndex === index"
      scroll-y
      class="scroll-view"
    >
      <view class="goods">
        <navigator
          hover-class="none"
          v-for="goods in item.goodsItems.items"
          :key="goods.id"
          :url="`/pages/goods/goods?id=${goods.id}`"
          class="navigator"
        >
          <image class="thumb" :src="goods.picture"></image>
          <view class="name ellipsis">{{ goods.name }}</view>
          <view class="price">
            <text class="symbol">¥</text>
            <text class="number">{{ goods.price }}</text>
          </view>
        </navigator>
      </view>
      <view class="loading-text">{{ item.finish ? '没有更多数据了' : '正在加载...' }}</view>
    </scroll-view>
  </view>
</template>

<style lang="scss" scoped>
page,
.viewport {
  height: 100vh;
  background-color: #f4f4f4;
}

.viewport {
  display: flex;
  flex-direction: column;
  padding: 180rpx 0 0;
  position: relative;

  .cover {
    width: 750rpx;
    height: 225rpx;
    border-radius: 0 0 40rpx 40rpx;
    position: absolute;
    left: 0;
    top: 0;
    overflow: hidden;

    .image {
      width: 750rpx;
    }
  }

  .tabs {
    display: flex;
    justify-content: space-evenly;
    height: 100rpx;
    line-height: 90rpx;
    margin: 0 20rpx;
    font-size: 28rpx;
    border-radius: 10rpx;
    box-shadow: 0 4rpx 5rpx rgba(200, 200, 200, 0.3);
    color: #333;
    background-color: #fff;
    position: relative;
    z-index: 9;

    .text {
      margin: 0 20rpx;
      position: relative;
    }

    .active {
      &::after {
        content: '';
        width: 40rpx;
        height: 4rpx;
        transform: translate(-50%);
        background-color: #27ba9b;
        position: absolute;
        left: 50%;
        bottom: 24rpx;
      }
    }
  }

  .scroll-view {
    flex: 1;
    background-color: #f4f4f4;

    .goods {
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      padding: 0rpx 20rpx 20rpx;

      .navigator {
        width: 345rpx;
        padding: 20rpx;
        margin-top: 20rpx;
        border-radius: 10rpx;
        background-color: #fff;

        .thumb {
          width: 305rpx;
          height: 305rpx;
        }

        .name {
          height: 88rpx;
          font-size: 26rpx;
        }

        .price {
          color: #cf4444;
          font-size: 30rpx;
          line-height: 1;

          .symbol {
            font-size: 70%;
          }

          .number {
            font-size: 120%;
          }
        }
      }
    }

    .loading-text {
      text-align: center;
      font-size: 28rpx;
      color: #666;
      padding: 20rpx 0 50rpx;
    }
  }
}
</style>
